- David Lain Baker (Self - Judge)
- Doug Marcaida (Self - Judge)
Episode: Branch Battle: Marines
Air Date: 2019-05-15
Runtime: 42 min
In the third round of the Battle of the Branches, four Marines are tasked with forging the KA-BAR. As an additional challenge, these smiths must adapt and overcome to forge together metals from a massive anchor using the San Mai technique. After a punishing round of testing, the two surviving smiths return home to forge the Marine Corps Officers Sword.